EP1106281B1 - Kernschiessverfahren und für die Durchführung des Verfahrens geeignete Vorrichtung - Google Patents
Kernschiessverfahren und für die Durchführung des Verfahrens geeignete Vorrichtung Download PDFInfo
- Publication number
- EP1106281B1 EP1106281B1 EP00126613A EP00126613A EP1106281B1 EP 1106281 B1 EP1106281 B1 EP 1106281B1 EP 00126613 A EP00126613 A EP 00126613A EP 00126613 A EP00126613 A EP 00126613A EP 1106281 B1 EP1106281 B1 EP 1106281B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- shooting
- molding material
- core box
- shooting method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/08—Moulds provided with means for tilting or inverting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C13/00—Moulding machines for making moulds or cores of particular shapes
- B22C13/12—Moulding machines for making moulds or cores of particular shapes for cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/006—Pressing by atmospheric pressure, as a result of vacuum generation or by gas or liquid pressure acting directly upon the material, e.g. jets of compressed air
Definitions
- the invention relates to a core shooting method for the production of molded parts from delayed-hardening molding materials according to the preamble of the claim 1 and a device suitable for carrying out the method.
- Delayed thermosetting molding materials such as concrete
- This method is that salient, or receding Contours of the molded piece to be manufactured due to the process only can be formed in the production direction. However, this leads to a very limited design freedom in the shaping of the produced Moldings.
- Foundry technology also includes other methods and devices known, which are used for non-retarded curing moldings.
- the patent EP 732 977 B1 shows a device in which the removal of the Cores outside the actual work area of Kernsch manvorrichung is possible.
- German patent application DE 40 20 933 A1 a device for filling a mold or core box in foundry machines with sand in which a shooting vessel is used, which is between a sand receiving station and a sand shooting station is movable.
- the container is at the Filling station with the amount of sand for several shoots filled and in the Shooting station pressurized with compressed air via a computer-controlled shooting valve, to fill the core box.
- German Offenlegungsschrift 29 08 210 relates to a core molding machine in which the two core box halves at two about a horizontal and a vertical axis pivotable frames are attached, which on transversely movable frame are articulated. The entire separator can be moved in the vertical direction to close the closed core box for filling against the shooting head press.
- the invention is based on the problem moldings from a delayed-curing Molded fabric to be able to produce, with the moldings in all axes and Layers may have protruding and / or recessed contours.
- this problem is further solved by a Device solved with the features of claim 15.
- the invention thus provides that a core shooting method to delayed hardening Form materials is applied.
- a delayed-hardening molding material is a molding material to understand that over a period of time in particular from 15 minutes to 8 Hardened for hours.
- concrete or cold-resin binder systems may be mentioned become.
- thermosetting molding materials which in terms of their geometric Training and design allow greater freedom of design.
- moldings of delayed-hardening molding materials to create, the protruding, or receding contours free in all axes and planes, or directions, may have.
- the core shooting device shown in Figure 1 comprises a shooting device 1, under which a molding device 2 is positioned, which has a Core box.
- the molding device 2 is above a rotation axis 3 pivotally mounted.
- the invention is based on the example of the production of a concrete molding, in particular a Dachstein, to be explained.
- the basic molding material concrete into a reservoir filled on the core shooting device.
- the molding material falls into the sand cylinder of the core shooting device.
- the shooting head which has a transition between the sand cylinder and the coarse outer contour of the core box forms.
- the shooting head plate is attached, whose Openings coincides with the Einschußö réelleen the core box.
- the Kemkasten with the main division level in the vertical direction under the shooting head.
- the shooting head is now with brought into contact with the core box. This is done either by lifting the core box to the shooting head or by lowering the Shooting head on the core box.
- the used for the delayed-curing molding compound Pressure is preferably at least 7 bar. Particularly preferred an outlet pressure of 8.5 to 10 bar. However, higher pressures can also be used be used.
- the occurring air mass flow fluidizes the flowing concrete and forms a two-phase flow of compressed air and concrete.
- the use of a Sand cylinder of particular importance since its lateral air inlet openings necessary to ensure adequate liquefaction of the To reach concrete or another delayed hardening molding material.
- Particularly useful for the process is the outlet pressure and the associated short filling time.
- the high kinetic energy, with the mold material is registered in the core box, ensures a sufficient Compaction of the fitting.
- the high shooting pressures of preferably more than 7 bar will ensure a delay in the case of delayed thermosetting molding materials, such as concrete, existing higher binding forces, the contour sharpness of the fitting and the necessary Contrast compression of the molding material in the core box.
- the high Binding forces between the individual molding material particles are a consequence high humidity of retarded thermosetting molding materials, such as concrete. As a result of these binding forces is the fluidity of concrete mixtures significantly lower than the flowability of the foundry mold materials, the processed according to the prior art with the core shooting method become.
- the reduced flowability of the delayed-curing molding compounds In addition to increased insertion pressure results in the longest Expansion of the molded piece to be manufactured in the preferred embodiment lie the invention in the direction of the incoming molding material should. This results in the vertical shooting position, which ensures that the molding material with the least possible number of directional deflections in the most distant from the bullet opening mold areas can get.
- a vertical one Orientation of the main division level of the core box connected to the vertical Orientation of the longest extension of the fitting, also a vertical one Orientation of the main division level of the core box given. however the main division level does not necessarily have to be aligned vertically
- the longest extent must be not necessarily aligned in the direction of vertical shooting and the main division level should not be vertical.
- the high outlet pressure of preferably more than 7 bar the result that the delayed-hardening molding compound can be processed.
- at Moldings with complicated geometry have the vertical orientation the longest extension of the core box and the main division level of the core box, however, the above advantages.
- the the molding material Transporting air is through nozzles and over a defined column dissipated.
- the core shooting device has means that the Core box for the removal of the molding substantially at 90 ° tilts.
- the tilting of the core box before removal of the molding is important with regard to the curing behavior of the to be removed Shaped body of delayed-curing molding compounds.
- the usual Molded materials processed by core shooting can be generated by heat and / or flowing through with a process gas within seconds or a maximum of a few minutes before they harden the core box be removed.
- the cores are in separation, d. H. when opening the core box and when removing it from the core box, good to handle.
- molding compound cures within hours and the Green Stability, i. the strength before a chemical or physical Hardening, does not allow direct handling.
- a carrier inserted as support in the core box.
- the Dachstein in the preferred embodiment of the inventive method in the vertical.
- the still closed core box is now tilted and essentially placed in the horizontal position, leaving the area flat of the Dachstein is supported on the entire surface of the carrier and, lying on this, can be removed.
- Kemkastenoberers After cleaning the Kemkastenoberers by compressed air and injection From the release agent is a new mold carrier in the Kemkasten inserted.
- the core box is closed and before or tilted back to vertical during the firing station procedure.
- the core box in his Inside further shaping components for the shaping of Have cavities in the molding.
- the process steps can be parallel in time be carried out in the various machine stations.
- Transport of Kemkarsten can be done via a rotary indexing table, a transport between the shooting station, a leveling station and a sampling station allows.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Devices For Molds (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Description
- Fig.1:
- eine Ansicht einer Kernschießvorrichtung mit schwenkbarer Formeinrichtung.
- Fig.2:
- einen Verriegelungsmechanismus
- Fig.3:
- einen Querschnitt der in Figur 1 und 2 dargestellten Vorrichtung.
Claims (15)
- Kernschießverfahren, bei dem ein Formstoff in einen Kernkasten eingeschossen und anschließend aus ihm entnommen wird,
dadurch gekennzeichnet, dass der Formstoff ein verzögert aushärtender Stoff ist, der mittels Druckluft in den Kernkasten eingeschossen wird und der Kernkasten zum Einschießen des Formstoffs im Wesentlichen in einer vertikalen bezüglich der Längsrichtung des zu formenden Körpers positioniert wird und zur Entnahme im Wesentlichen in eine Horizontale geschwenkt wird. - Kernschießverfahren nach Anspruch 1,
dadurch gekennzeichnet, dass der verzögert aushärtende Formstoff über einen Zeitraum von 15 Minuten bis 8 Stunden aushärtet. - Kernschießverfahren nach Anspruch 2,
dadurch gekennzeichnet, dass es sich bei dem Formstoff um Beton handelt. - Kernschießverfahren nach Anspruch 2,
dadurch gekennzeichnet, dass es sich bei dem Formstoff um Kaltharzbindersysteme handelt. - Kernschießverfahren nach einem oder mehreren der vorangegangenen Ansprüche,
dadurch gekennzeichnet, dass der Kernkasten zum Einschießen des Formstoffs, bezogen auf die Hauptteilungsebene, im Wesentlichen in einer Vertikalen positioniert wird. - Kernschießverfahren nach einem oder mehreren der vorangegangenen Ansprüche,
dadurch gekennzeichnet, dass der Formstoff nach dem Einschießen nivelliert wird. - Kernschießverfahren nach Anspruch 6,
dadurch gekennzeichnet, dass die Nivellierung durch Aufpressen eines Konturenteils erfolgt. - Kernschießverfahren nach einem oder mehreren der vorangegangenen Ansprüche,
dadurch gekennzeichnet, dass der aushärtende Formstoff auf einen sich im Kernkasten befindlichen Formstückträger aufgeschossen wird. - Kernschießverfahren nach einem oder mehreren der vorangegangenen Ansprüche,
dadurch gekennzeichnet, dass der aushärtende Formstoff mittels Druckluft in den Kemkasten eingeschossen wird, in dem ein Druckluftreservoir über eine Schießeinheit in Richtung des Kernkastens entspannt wird. - Kernschießverfahren nach Anspruch 9,
dadurch gekennzeichnet, dass die Druckluft einen Ausgangsdruck von mindestens 7 bar aufweist. - Kernschießverfahren nach Anspruch 10
dadurch gekennzeichnet, dass die Druckluft einen Ausgangsdruck im Bereich von 8,5 bar bis 10 bar aufweist. - Kernschießverfahren nach einem oder mehreren der vorangegangenen
Ansprüche,
dadurch gekennzeichnet, dass das Formteil entnommen wird, indem das Oberteil des Kernkastens abgehoben wird und durch eine Ausstoßvorrichtung der Formstückträger,
welcher das Formstück trägt, durch das Kernkastenunterteil soweit angehoben wird, dass der Formstückträger mit dem darauf liegenden Formstück entnommen werden kann. - Kernschießverfahren nach einem oder mehreren der vorangegangenen Ansprüche,
dadurch gekennzeichnet, dass das Einschießen des aushärtenden Formstoffes, das Nivellieren und die Entnahme des Formstücks aus dem Kernkasten an verschiedenen Maschinenstationen erfolgt. - Kernschießverfahren nach Anspruch 13,
dadurch gekennzeichnet, dass der Kernkasten zur Durchführung der verschiedenen Verfahrensschritte über einen Rundschalttisch transportiert wird. - Kernschießvorrichtung zur Duchführung des Verfahren nach Anspruch 1 mit einer Schießvorrichtung, an der ein Formstoff mittels Druckluft durch einen Schießkopf in einen Kernkasten eingeschossen werden kann, umfassend Mittel zum Wenden des Kernkastens, Mittel zum schlagartigen Entspannen eines Druckluftreservoirs und eine Entnahmestation,
dadurch gekennzeichnet, dass über dem Schießkopf ein Sandzylinder mit seitlichen Lufteintrittsöffnungen zur Aufnahme eines aushärtenden Formstoffs vor dem Einschießen angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19959234A DE19959234C2 (de) | 1999-12-08 | 1999-12-08 | Kernschießverfahren und für die Durchführung des Verfahrens geeignete Vorrichtung |
DE19959234 | 1999-12-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1106281A1 EP1106281A1 (de) | 2001-06-13 |
EP1106281B1 true EP1106281B1 (de) | 2005-03-30 |
Family
ID=7931896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00126613A Expired - Lifetime EP1106281B1 (de) | 1999-12-08 | 2000-12-04 | Kernschiessverfahren und für die Durchführung des Verfahrens geeignete Vorrichtung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1106281B1 (de) |
AT (1) | ATE291977T1 (de) |
DE (2) | DE19959234C2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007043163A1 (de) | 2007-09-11 | 2009-03-26 | Monier Technical Centre Gmbh | Verfahren für die Herstellung von Dachsteinen sowie eine Einrichtung für die Herstellung dieser Dachsteine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013216674B4 (de) | 2013-08-22 | 2022-10-13 | Bayerische Motoren Werke Aktiengesellschaft | Selbstschließende Gummidichtkappen für Einschussdüsen bei der Herstellung von Sandkernen in der Gießerei |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD135698B1 (de) * | 1978-04-05 | 1982-08-25 | Juergen Lehmann | Formmaschine,insbesondere kernformmaschine |
JPS56500644A (de) * | 1979-05-18 | 1981-05-14 | ||
JPS5890348A (ja) * | 1981-11-24 | 1983-05-30 | Sintokogio Ltd | ガス硬化鋳型造型機 |
DE3339941A1 (de) * | 1983-11-04 | 1985-05-15 | Forma-Bühler GmbH Automatische Formanlagen, 8900 Augsburg | Verfahren und vorrichtung zur herstellung von aus zwei formhaelften bestehenden kastenlosen giessformen |
DE4020933A1 (de) * | 1990-06-06 | 1991-12-12 | Rheinische Maschinenfabrik & E | Vorrichtung zum befuellen eines form- oder kernkastens bei giessereimaschinen |
US5630305A (en) * | 1991-08-26 | 1997-05-20 | Hlasnicek; Richard S. | Surface covering unit methods of use and manufacture |
DE4434798A1 (de) * | 1993-10-14 | 1995-05-11 | Georg Fischer Giesereianlagen | Kern- und Maskenschiessmaschine |
-
1999
- 1999-12-08 DE DE19959234A patent/DE19959234C2/de not_active Expired - Lifetime
-
2000
- 2000-12-04 DE DE50009913T patent/DE50009913D1/de not_active Expired - Lifetime
- 2000-12-04 AT AT00126613T patent/ATE291977T1/de not_active IP Right Cessation
- 2000-12-04 EP EP00126613A patent/EP1106281B1/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007043163A1 (de) | 2007-09-11 | 2009-03-26 | Monier Technical Centre Gmbh | Verfahren für die Herstellung von Dachsteinen sowie eine Einrichtung für die Herstellung dieser Dachsteine |
US20110163475A1 (en) * | 2007-09-11 | 2011-07-07 | Benno Boehm | Method for producing roofing tiles and device for producing said roofing tiles |
Also Published As
Publication number | Publication date |
---|---|
DE50009913D1 (de) | 2005-05-04 |
ATE291977T1 (de) | 2005-04-15 |
DE19959234C2 (de) | 2001-10-18 |
EP1106281A1 (de) | 2001-06-13 |
DE19959234A1 (de) | 2001-06-21 |
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